• ASHA - Ruralcap Rammed Earth Report No. 1 and H-Plan House Comments, April-September 1968

• DeLong honored at SDSU, 1988
• Rammed walls, undated
• DeLong Honored for Mare the 40 Years of Service to SDSU, 1971
• Obituary, 1988
• Vita
• Oldest Living Graduate, decades don't dig a sharp memory for 103-year-old DeLong, 2011
• SDSU Professor One of 15 Nationwide Honored by Body, 1974
• Portrait, 4 black-and-white negatives, April 30, 1975
• Portrait, 6 black-and-white negatives, December 22, 1966
• Portriat, 10 black-and-white negatives, undated

• Agricultural Engineering Staff, South Dakota State College, for Farm Structures Materials Hankbook

This collection is composed of publication related to rammed earth structures, some of which were written by DeLong, others are collection publications. Also included are biographical material about H.H. DeLong and photographs.

• United Nations Bulletin No. 4, October 1950

• Texas Engineering Experiment Station Research Reports

• by Kydia A. and David J. Miller

• Bulletin 298: The Relation of Colloids in Soil to its Favorable Use in Pise or Rammed Earth Walls, March 1936
• Bulletin 336: Paints and Plasters for rammed Earth Walls, May 1940
• Extension Circulat 362: Poultry Houses for South Dakota, March 1937
• Circular 42: New Hard Surfaced Floors for the Farm Poultry House, January 1943
• Bulletin 277, Revised: Rammed Eart Walls for Farm Buildings, June 1945
• Bulletin 393: Hard-Surfaces floors for Farm Buildings, May 1949
• Circular 149: Rammed Earth Walls, April 1959
• USDA Bulletin No. Rammed earth Walls for Buildings, August August 1926
• Tezas A&M Bulletin No. 99: Adoba as a Construction Material in Texas, 1945
• USDA Bulletin No. 1720: Adobe or Sun-dried Brick for Farm Buildings, January 1934
• USDA Leaflet 535: Building with Adobe and Stabilized-earth Blocks, December 1965
  Department of Scientific and Industrial Building Research Special REport No. 5: Building in Cob and Pice de Terre, 1922
• University of California Experiment Station Bulletin 472: Adobe Construction, January 1941

• Soil Admixtures for Earth Walls, September 1942
• Puddled-earth and Rammed Earth Walls, August 1939
• Rammed earth revisited, winter 1994
• Hankbook for Building Homes of Earth, undated
• Rammed Earth, A Selected Bibliography, 1982
• Cottage Building in Cob, ise, Chalk, and Clay, 1919

• SD High Liner: Rammed earth houses were economical and ecological, September 1976
• RFD News: Rammed earth wall featured at SDSU, September 15, 1988

• by H.H. DeLong, 1st asummer tgerm, 1941